Elevator



(No Model.) 2 Sheets-Sheet 1.

W. B. OABOT & R. M. BRADLEY.

ELEVATOR.

I Patented Feb. 26, 1889.

h a m My WW (No Model.) 2 Sheets-Sheet 2.

W. B. OABOT & R. M. BRADLEY. ELEVATOR.

&398 699. Patented Feb. 26. 1889..

NHFD drains ATENT rrrcn.

WILLIAM B. lABO'l. ()1? WEST UEDFORD, AND RICHARDS M. BRADLEY, OF

BOSTON, MASSACHUSETTS.

ELEVATOR.

SPECIFICATION forming part of Letters Patent No. 398,699, dated February 26, 1889. Application filed December 8, 1887. Serial No. 257,300. tNo model.)

To (all whom it may concern: l a building or other structure, the said shaft Be it known that we, lVILLL-in B. CABOT, of or well having doors B at the landings or floors est Medford, county of Middlesex, State of l of the building, only one shaft-door being Massachusetts, and RICHARDS M. l-3RADLEY,of l herein shown. \Vithin the elevator shaft or 5 Bostoi'neountv of Suffolk, and State of Massawell isa ear, a, suspended in usual manner by ehusetts, have invented an Improvement in 1 one or more ropes, (4, passed about sheaves Elevators, of which the following description, I at the top of the building and connected to in connection with the accompanying draw the hoisting-engine, usually located in the ings, is a specification, like letters on the basement of the building the said engineand 1o drawings re 'iresenting like parts. sheaves (not herein shown) being substan- This invention relates to elevators, and tiallv as common to the Whittier and other more especially to that class known as paswell-known elevators. senger'elevators," it having for its object to i As shown in Fig. l, the o ieration of the provide suitable means, as will be described, i hoisting-engine referred to is controlled by a 15 whereby accidents may be diminished and shippenrope. extended through the ear (I, avoided, and thereby greater safety secured provided with the usual (lt)()l,(l and forming to persons using the elevator. part of the o 'icrating mechanism of the car.

The particular features in which our inven- This door u (see I ig. 2) has attached to it on tiion consists will be pointed out in the claims its outer side two guides, tr, herein shown 20 at the end of this specification. angle-irons,secured,as shown,to a wooden Figure 1. is a section of a sut'ticient portion or other bloclgo fihe said guides eo-operating of an elevator well or shaft and car therein to i with a stud. or projection, 0, herein shown on enable our invention to be understood, the a plate, (1 secured to abloclt, a", connected. section being taken on line a a, Fig. 1; Fig. to or forming part of the shaft-door B, the

o 5 1, a transverse section of the car and a porsaid guides passing astride the said stud or tion of the walls of the shaft or well to more projection. when the car in its ascent or declearly show the invention, the section being scent passes a door in the shaft or well, the taken on line a a, Fig. l, the ear-door being said stud. and guides ctmstituting an interopposite a door in the shaft or well; Fig. 2, a locking device or doonconneetion to unite the 30 sectional detail of part of the car and earsaid doors. g door, with the latter opposite the shaft-door, The car is made to travel. as herein shown, the said section being taken on line a a, Fig. by operating the shipperrope (F, which has 1; Fig. 3, a partial vertical, section taken at co operating with it a holding device, herein the bottom of the car to show the means einshown as a clamp or holder, one half, I), of

"5 ployed for unlochingthe shaltdoonthe figure which is attached to a frame, I), of ordinary also showing part of the shaft and shaft-door; construction erected upon the iloor of the ear 4.- and 5, details to be referred to; Fig. (3, p ("1, the other half, if, of the said clamp being a view of part of Fig. l on line .i' looking l secured to or forming part of a lever, b pivtoward the right; Fig. 7, an under side view otjed, as shown at I), to a cross-brace, Z7, 0t

40 of the clamping inecl'ianisin detached from the the f *ame b, the said holding device engaging car; Fig. 8, a sectional detail, to be referred i the shipper-rope to stop the car when the leto, the section being taken on line 3 1 Fig. ver 12 occupies the position shown in Fig.1,

6; Fig. 9, a. detail of the bolt for locking the j the car at: such time being supposed to be opcar-door; Fig. 10. an enlarged. detail to be posite a door in the elevator shatter well, the

45 referred to; and Fig. 11 is amodification of t said frame and part connected thereto being 5 Fig. 3, showing the lever and spring attached more clearly shown in Fig. 10. Each half-. to the car instead of the shaft and the button clamp b b is preferably provided with a to the shaft instead of to the car. cushion, b, of leather or other suitable ma- Referring to Fig. 1, A represents an eleterial, (see Fig. 7,) to prevent injury to the 50 vator shaft or well formed by the walls A of i shipper-rope when it is clamped as described.

The lever b" has an arm, I), (see Figs. 1, 6, and 10,) to which is secured a bolt-actuating device, D, herein shown as composed of two parallel bars,'c 0, attached by angle-irons b to opposite sides of the said arm.

The bars 0 c are arranged diagonally to the movement of the lever b and receive between them a stud, c, of a bolt, 0 and upon movement of the lever cause the bolt 0 to slide in suitable guides, 0 the said lever, through the bolt-actuating device D, serving to move the said bolt forward to place it behind and in the path of movement of the car-door a to thus lock the said door, or upon movement of the lever to move the said bolt baclnvard to withdraw it from behind and permit the door to be opened, as desired.

lVhen the lever 19 is moved to its position shown in Fig. 1, which occurs when the car has arrived opposite a door in the elevator shaft or well, the shipper-rope is clamped and the bolt is withdrawn from the dotted to the full-line position shown in Fig. 6, thus leaving the door a free to be opened; but when the lever I) is moved forward or into engagement with a notch, (Lin the frame I; the shipper-rope is released or unclamped, and the bolt is at such time moved into its dotted-line position behind the car-door, as shown in Figs. (3 and 7, preventing the latter being fully opened while the car is in motion. It will thus be seen that it is impossible to start the car until the lever is moved to release the shipper-rope, and the shipper-rope cannot be released until after the car-door is closed, the closing of the car-door permitting the bolt 0 to be moved by the said lever into position behind the car-door to lock the same.

As the car-door is shut, the shaft-door opposite which the car has stopped will be shut at the same time, it being locked to the cardoor, as above described. To prevent the door of the elevator-shaft from being opened from the outside until the car hasarrived substantially opposite it, the said shaft-door on its inner side has attached to it, as shown, a cam or angular projection, d", (see Fig. 3,) with which co-operates a spring-actuated lever, (Z pivoted, as herein shown, to a stud, (Z secured to the wall of the shaft, the said lever being acted upon by the spring (1, to.

normally keep the end of the said lever in the path of movement of the cam or projection d, the said lever and cam or projection forming a latch or locking device by which the shaft-door is locked until the lever d is moved out of the path of movement of the said shaft-door, as will be described. 7

The car a, as herein shown, has securedto it a cam or projection, (1, which we shall hereinafter designate as a button, the said button being so located on the car as to act upon the lever (Z to move it away from the projection (1' when the stud or projection a is near its central position in the guideway 00 a The shaft-door is now free to-be opened simultaneously with the car-door. If desired,

the car-door maybe provided on its outer side with a similar stud or projection, (Z to be engaged by a lever, d pivoted to the said car, (see Fig. 11,) the said lever being acted upon by buttons (1 secured to the wall of the ele vator-shaft. \Vhen the car-door is thus provided on the outside with the locking device, as described, the holding device and the doorlocking device inside the car may, if desired, be dispensed with.

The blocks e (1., herein shown in Fig. 2, may be omitted, and the guide and cam placed on the doors, especially when the space between the outside of the car and the inside of the well is but little.

'e do not desire to limit ourselves to the precise form or construction of the holding device shown and described, as it is evident that the same may be changed to engage a wheel or a lever when applied to elevators employing these forms of operating mechanism.

In some cases it may be desired to start the elevator from the outside when a constant attendant is not employed-as, for instance, in a private dwelling-and in this case the shaft or car doors are provided with holes ff, substantially in line with each other, and, preferably, opposite the lever of the operating mechanism, so that the same may be reached and operated from the outside.

The hole 7 in the shaft-door maybe provided with a cover which may be locked or secured in any desired manner to prevent tampering by unauthorized persons.

It will be noticed that the clamp to engage the starting mechanism and the bolt to lock the door are connected together, so that when one, as the clamp, isin operation the other is not and cannot be put in operation until the clamp is rendered inoperative, the movement made to render the clamp inoperative rendering the bolt operative.

lVe claim- 1. In an elevator, the combination, with a car having a door and a shipping mechanism within the car, of a clamp or holder to engage the shipping mechanism, and abolt connected to the said clamp or holder to operate simultaneously therey'vith, and adapted to lock the car-door when the shipping mechanism is free to be operated to put the car in motion and to unlock said door when the shipping mech anism is clamped, substantially described.

.2. An elevator comprising a shaft-door, an elevator-car provided with a door, a shipping mechanism within the car, a clamp or holder to en gage the shipping mechanism, abolt connected to the said clamp or holder to operate simultan eously therewith and adapted to lock the car-door when the shipping mechanism is free to be operated to put the car in motion, and to unlock said door when the shipping mechanism is clamped, a doorconnection, substantially as described, to lockthe cardoor and shaft-door together when the cardoor is substantially opposite the shaft-door,

a locking device to lock said shaft-door, and a projection carried by the car to operate said locking device to permit the shaft-door to be opened when the car-door is substantially opposite the shaft-door, substantially as described.

3. In an elevator, a car-door, a having guides supported at its outer side combined with a door of the elevator shaft or Well provided with a stud or projection to co-operate with said guides to open the said doors when the car door is suljistantially opposite the shaftdoor, substantially as described.

it. In an elevator, 21 car-door, u, and ashal'i- WILLIAM CABOT. RICHARDS M. BRADLEY.

Witnesses: V

JAMES H. CHURCHILL, H. DEWAR. 

